Answer:

2

Explanation:

substitute the the value of x to 3

f(x)=2 + x2 - x2

f(3)=2 + (3)2 - (3)2

f(3)=2 + 9 - 9( multiply 3 to itself 2 times since the exponents is 2)

f(3)=2 (+ 9 - 9 is zero that's why the answer is 2)